diff --git a/build.gradle b/build.gradle
index c7e3ec754dd9325e6e51735f37d7bf3998b02885..2d26f9ed9fc4984acef7afe9f6c72679dcb8feac 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,8 @@ group = 'fr.univ-lille.gitlab.sra1-2023'
 version = '0.0.1-SNAPSHOT'
 
 java {
-	sourceCompatibility = '17'
+	sourceCompatibility = '11'
+	targetCompatibility = '11'
 }
 
 repositories {